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- Intro about DCS
- Types of DCS
- Introducing RAMONA
- Executive team of RAMONA
- Completed projects
- Projects in progress
- Partners
PLCs were initially used to facilitate control issues with relays, because the use of relays involves a lot of space, plenty of wiring, troubleshooting in the event of a malfunction, and due to its mechanical short life. By integrating analogue to digital and digital-to-analog converter, analog control of this analogue processor is also possible.
With PLCs, you can do all the control work, from controlling the temperature of a small sensor to controlling the production process of a complex product or a nuclear power plant. The level of control ability of each PLC depends on the type of CPU used in it.
PLCs are very successful in doing simple things, but as the process becomes more complex and larger, controlling it will only have a precision and low speed CPU. To increase the speed, accuracy, and security of the system, it is possible to divide the work into a system that controlled the system by using multiple independent processors, each processor controlling a part of the entire work. So, it's possible to build a DCS control system by using multiple PLCs simultaneously and managing their performance for a process. DCS is the total connection of multiple PLCs, where their processors are networked and one computer manages the rest of the Network Manager.
If we consider all field-level sensors as nodes of a network and extend the network to the field, a fieldbus network will be created.
In a simple DCS system, the network is only at the management level but In the fieldbus system, FCS, any transmitter is a computer, that is, a separate BIOS and address.
The National Iranian Petrochemical Company has been using its field for the first time in the field of Bass, and BPC is one of the few fully fieldbased companies.
One of the advantages of using the fieldbus system is the separation of analog and digital controllers and linking them into software. This is similar to having two powerful PLCs together, one that controls analog parameters and the other controls only digital parameters.
Another advantage of the fieldbus is the simple configuration of the graphical and display environment (Monitoring) and the ability to use Windows features in that environment.
Other protocols, like Profibus, extend the network into the field, but in the fieldbus, the standard FOUNDATION protocol is used, and more than 200 equipment manufacturers follow it.
The purpose of the fieldbus is to reduce cabling volumes and reduce the hardware used for the control system. Increase the information received and sent from the transmitters. Also, the structure of strategy and control programs in the feedbacks is blocked (Function Block), which makes the implementation and configuration (configuration) of control matters very convenient.
It should be noted that in projects that do not have strong monitoring, the installation site or the damage to the cable bus, the location of the transceivers, and ... will cause noise in the information sent and received, and will be problematic. If the location of the transmitters that are the field is not set correctly, the bus line will have a lot of maze and the DCS cable consumption will also increase!
Fieldbus is now the most advanced and, at the same time, the most efficient control system, because it includes advanced control systems with useful software.
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The ability to communicate with upstream sections, FCS and HIS Yukagava is included for these modules, and all settings available in the IO section can also be defined in the Ramona modules.
| ردیف | General Features of Ramona Products |
| 1 | placing and removing the product at work time (Hot plug) |
| 2 | use analog and digital modules for redundancy (with other Ramona or Yokogava modules) |
| 3 | Response Rate Less than 1 second of the Redundant Module to the corresponding module defect |
| 4 | Compatibility of the size and power consumption of the Ramona modules with Yokogawa samples |
Sample Ramona Module Cards in accordance with YOKOGAWA DCS:
-
- Ramuna module cards Sample
RAMONA-R751 Module:
The RAMONA-R751 module, corresponding to the ADV151 series of Yokogawa modules.
| Specification | Model |
| Compatible with Yokogawa ADV151 | EC4-251-R751- |
| 32, Common every 16-channel | Number of input channels |
| 24 VDC | Rated input voltage |
| 16 to 27 VDC | Input ON voltage |
| ≤ 5 VDC | Input OFF voltage |
| 5mA/ channel | Input current (@rated input) |
| 35 VDC | Maximum allowable input voltage |
|
Between input signal & system: 2.5 KVDC, for 1 minute Between commons: 1 KVDC, for 1 minute |
Withstanding isolating voltage |
|
Status input Pushbutton input |
Functions |
| 0.4 kg | Weight |
-
- RAMONA-R751
Module RAMONA-S751:
The RAMONA-S751 module, corresponding to the ADV551 series of Yokogawa modules.| Specification | Model |
| Compatible with Yokogawa ADV551 | EC4-251-S751- |
| 32, Common every 16-channel | Number of output channels |
| 24 VDC | Rated applied voltage |
| 24 VDC, 50 mA | Load voltage |
| 20.4 to 26.4 VDC | External power supply voltage range |
| 2 VDC | Output ON voltage maximum value |
| Current sink | Output format |
| 100 mA/channel, 26.4 V | Maximum load current |
|
Between output signal & system: 2.5 KVDC, for 1 minute Between commons: 1 KVDC, for 1 minute |
Withstanding isolating voltage |
|
Status output Pulse width output Time-proportioning output |
Functions |
|
0.2 kg |
Weight |
-
- RAMONA-S751
Module RAMONA-R759:
The RAMONA-R759 module, corresponding to the ADV159 module, comes from the series of CENTUM-ST Compatible Yukagava modules.
| Specification | Model |
| Compatible with Yokogawa ADV159 | EC4-251-R759- |
| 32 isolated channels | Number of input channels |
|
OFF signal 100 kΩ or more ON signal 200 Ω or less Minimum current value when contact is short-circuited: 1.25 mA |
Contact input signal |
|
OFF signal 4.5 to 25 V DC ON signal ±1 V DC, 200 Ω or less |
Voltage input signal |
| 4.5 V DC, 20 mA or more | Input contact rating |
|
Status input Pushbutton input |
Functions |
| 0.3 kg | Weight |
-
- RAMONA-R759
ماژول RAMONA-S759:
The RAMONA-S759 module, corresponding to the ADV559 module, comes from the series of Centum-ST Compatible Yokogawa modules.
| Specification | Model |
| Compatible with Yokogawa AAI135 | EC4-251-A435- |
| 8 isolated channels | Number of input channels |
| 4 to 20 mA | Input signal |
|
25 mA |
Allowable input current |
| ±16 μA | Accuracy |
|
21.6 V or more (at 20 mA) 26.4 V or less (at 0 mA) |
Transmitter power supply |
|
±16 μA/10 °C |
Temperature drift |
|
Between input signal & system: 500 VDC, for 1 minute Between channels: 500 VDC, for 1 minute |
Withstanding isolating voltage |
| 0.2 kg | Weight |
-
- RAMONA-A435
Module RAMONA-E435:
The RAMONA-E435 module, corresponding to the AAI835 series of Yokogawa modules.| Specification | Model |
| Compatible with Yokogawa AAI835 | EC4-251-R751- |
|
Input: 4 isolated channels Output: 4 isolated channels |
Number of I/O channels |
|
Input: 4 to 20 mA Output: 4 to 20 mA |
I/O signal |
| 25 mA | Allowable input current |
| 0 to 750 Ω | Allowable load resistance |
|
Input: ±16 μA Output: ±48 μA |
Accuracy |
|
21.6 V or more (at 20 mA) 26.4 V or less (at 0 mA) |
Transmitter power supply |
| ±16 μA/10 °C | Temperature drift |
|
Between I/O signals & system: 500 VDC, for 1 minute Between channels: 500 VDC, for 1 minute |
Withstanding isolating voltage |
| 0.3 kg | Weight |
-
- RAMONA-E435
Module RAMONA-A443:
The RAMONA-A443 module, corresponding to the AAI143 series of Yokogawa modules.| Specification | Model |
| Compatible with Yokogawa AAI143 | EC4-251-A443- |
| 16 isolated channels | Number of input channels |
| 4 to 20 mA | Input signal |
| 24 mA | Allowable input current |
| ±16 μA | Accuracy |
|
21.6 V or more (at 20 mA) 26.4 V or less (at 0 mA) (output current limit: 25 mA) |
Transmitter power supply |
| For each channel by setting pin | Setting of 2-wire or 4-wire transmitter |
|
±16 μA/10 °C |
Temperature drift |
| Between input signal & system: 1500 VDC, for 1 minute | Withstanding isolating voltage |
| 0.3 kg | Weight |
-
- RAMONA-A443
Module RAMONA-B443:
The RAMONA-B443 module, corresponding to the module AAI543 series of Yokogawa modules.| Specification | Model |
| Compatible with Yokogawa AAI543 | EC4-251-B443- |
| 16 isolated channels | Number of output channels |
| 4 to 20 mA | Ouput signal |
| 0 to 750 Ω | Allowable load resistance |
| ±48 μA | Accuracy |
| ±16 μA/10 °C | Temperature drift |
| Between output signal & system: 1500 VDC, for 1 minute | Withstanding isolating voltage |
|
0.3 kg |
Weight |
-
- RAMONA-B443
Module RAMONA-A441:
The RAMONA-A441 module, corresponding to the AAI141 series of Yokogawa modules.| Specification | Model |
| Compatible with Yokogawa AAI141 | EC4-251-A441- |
| 16 non-isolated channels | Number of input channels |
| 4 to 20 mA | Input signal |
| 27 mA | Allowable input current |
| ±16 μA | Accuracy |
|
14.8 V or more (at 20 mA) 26.4 V or less (at 0 mA) (output current limit: 27 mA) |
Transmitter power supply |
| For each channel by setting pin | Setting of 2-wire or 4-wire transmitter |
|
±16 μA/10 °C |
Temperature drift |
| 0.3 kg | Weight |
-
- RAMONA-A441
Module RAMONA-E441:
The RAMONA-E441 module, corresponding to the AAI841 series of Yokogawa modules.| Specification | Model |
| Compatible with Yokogawa AAI841 | EC4-251-E441- |
|
Input: 8 non-isolated channels Output: 8 non-isolated channels |
Number of I/O channels |
|
Input: 4 to 20 mA Output: 4 to 20 mA |
I/O signal |
| 25 mA | Allowable input current |
| 0 to 750 Ω | Allowable load resistance |
|
Input: ±16 μA Output: ±48 μA |
Accuracy |
|
14.8 V or more (at 20 mA) 26.4 V or less (at 0 mA) (output current limit: 25 mA) |
Transmitter power supply |
|
±16 μA/10 °C |
Temperature drift |
| 0.4 kg | Weight |
-
- RAMONA-E441
The executive team of modules consists of five teams of top engineering engineers who have high education in electrical engineering, electrical engineering control and computer engineering, as well as a background in the field of manufacturing, manufacturing and reverse engineering of electronic cards, He has managed to build more than 300 types of control and power electronic cards, and has stepped up the process of localization of this knowledge.
This unit is managed directly by the company's manager.
The organizational chart of this unit is as follows:
1. Design, construction and installation of Ramona I/O card series for use in South Pars Gas complex
| Project | Replacement of input and output modules of YOKOGAWA I/O cards |
| Employer | General Staff of the South Pars (SPGC) |
| Project duration | 30 Month |
| Delivery Date | 2016 Jun |
South Pars Gas Complex SPGS